Item | Index | Unit | 95 Al2O3 | 99 Al2O3 |
Physical Characteristics | Bulk density | g/cm 3 | 3.6 | 3.6 |
Water absorption | % | 0 | 0 | |
Mechanical Characteristics | Flexural strength | Mpa | 320 | 340 |
Hardness Vickers | Gpa | 12.2 | 13.5 | |
Elastic modulus | Gpa | 280 | 320 | |
Thermal Characteristics | Poisson's ratio | - | 0.22 | 0.23 |
Expansion coefficient | 10-6/℃ | 7.1 | 7.2 | |
Thermal conductivity | w/(m . k) | 16 | 24 | |
Specific Heat | 10-3 J/ (kg * K) | 0.78 | 0.78 | |
Electrical Characteristics | Dielectric constant | - | 9 | 9.4 |
Dielectric loss angle | *10 -4 | 15 | 5 | |
Dielectric strength | *10 6 V/m | 12 | 15 |
1. Alumina Ceramic Sheet has good processing performance due to its soft and hard moderate properties, and can be easily processed into the desired shape. Therefore, alumina pieces has a wide range of applications in the craft industry.
2. Alumina Ceramic Sheet has excellent durability, and it also has a very strong metallic feel. Therefore, its application in the automotive industry is also very extensive, which can greatly improve the grade of the product.
3. The alumina board has strong high temperature resistance and is not easy to burn, which makes it widely used in fire protection and environmental protection.
